6668692 has 24 divisors (see below), whose sum is σ = 12436200. Its totient is φ = 3118080.

The previous prime is 6668687. The next prime is 6668699. The reversal of 6668692 is 2968666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3111696 + 3556996 = 1764^2 + 1886^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18934 + ... + 19282.

It is an arithmetic number, because the mean of its divisors is an integer number (518175).

Almost surely, 2^6668692 is an apocalyptic number.

It is an amenable number.

6668692 is a deficient number, since it is larger than the sum of its proper divisors (5767508).

6668692 is a wasteful number, since it uses less digits than its factorization.

6668692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 649 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 6668692 is about 2582.3810718018. The cubic root of 6668692 is about 188.2262629628.

The spelling of 6668692 in words is "six million, six hundred sixty-eight thousand, six hundred ninety-two".